.nav-bar {
  position: fixed;
  top: 0;
  left: 50%;
  font-size: 14px;
  transform: translateX(calc(-50% - 520px));
}

.nav-bar li {
  margin-bottom: 8px;
  cursor: pointer;
}

.nav-bar li:hover {
  color: #409EFF;
}
